Which researcher is conducting basic research? a. harlan, who is testing a theory about the development of prejudice b. elsie, who wants to know how to reduce bullying at day care centers c. shayna, who is looking at how people use social media when they have cancer d. debra, who wants to understand the role of social networks in finding new jobs

a. Harlan, who is testing a theory about the development of prejudice

Explanation:

Basic research refers to a form of research that carried out in order to prove or disprove a theory that already proposed in the past.  This type of research is most commonly used in finding out patterns among common occurrence that people often overlooked.

(in option A, harlan conducted the research to prove whether the theory about the development of prejudice is correct)

In order to achieve the conclusion,  Harlan need to set up a control group filled with independent variables that can influence the development of prejudice.